To plot the means with error bars in Matplotlib, you can use the errorbar function to display the mean and standard deviation for each column. Here’s an example of how to achieve this:

import matplotlib.pyplot as plt
import numpy as np

# Assuming you have the means and standard deviations calculated
means = [...]  # List of means for each column
std_devs = [...]  # List of standard deviations for each column

# Plotting the bar chart with error bars
plt.bar(x=range(len(means)), height=means, yerr=std_devs, capsize=5)
plt.show()